Rheem SP11526C R-Tech Magnesium Anode Rod<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Anode Rod - 0.900 in. diameter x 44-3/8 in. long - Magnesium R-Tech</li><li>Anodic Material: Magnesium</li><li>Hex Head Size (in.): 1-1/16</li><li>Thread Size - NPT (in.): 3/4</li><li>Resistored: Yes</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31szXdkswgL.jpg" noproxy>